@article{Ken-ichi Shishido_Shinya Inazumi_2021, title={ASSESSMENT ON LEAKAGE RISK OF SIDE IMPERVIOUS WALLS AT COASTAL LANDFILL SITES}, volume={16}, url={https://geomatejournal.com/geomate/article/view/2639}, abstractNote={<p>An evaluation method that can express the local leakage of leachate from joint sections in steel <br>pipe sheet pile (SPSP) cutoff walls is discussed in this study. In particular, the evaluation of environmental <br>feasibility (containment of leachates containing toxic substances) considering a three-dimensional arrangement <br>and hydraulic conductivity distribution of the joint sections in the SPSP cutoff wall is compared with an <br>evaluation that generally uses the equivalent hydraulic conductivity. This equivalent hydraulic conductivity <br>assumes that the joint section and the steel pipe are integrated; therefore, the hydraulic conductivity is <br>substituted with a uniform permeable layer. However, in an evaluation that employs the equivalent hydraulic <br>conductivity, it is difficult to consider the local leakage of leachate containing toxic substances from the joint <br>sections in the SPSP cutoff wall. This paper concluded that evaluations of the environmental feasibilities of <br>the SPSP cutoff walls with joint sections must take into account the local leakage of leachates containing toxic <br>substances from the joint section.</p>}, number={54}, journal={GEOMATE Journal}, author={Ken-ichi Shishido and Shinya Inazumi}, year={2021}, month={Feb.}, pages={86–93} }